【摘 要】
：
Dear editor,rnWith the developments of industrial automation in recent years,vehicle suspension systems have received a great deal of attention in industry and academia due to their critical role in the chassis performance of vehicles[1].The suspension sy
【机 构】
：
Department of Applied Science,School of Computing,Engineering and Built Environment,Glasgow Caledoni
论文部分内容阅读
Dear editor,rnWith the developments of industrial automation in recent years,vehicle suspension systems have received a great deal of attention in industry and academia due to their critical role in the chassis performance of vehicles[1].The suspension system is expected to guarantee the vehicle\'s maneuverability and provide satisfactory ride comfort by absorbing the vibrations arising from the road surface excitations and ensuring road-holding capability and suspension safety.
其他文献
神木气田属典型的致密气藏,气井普遍具有“低压、低产、井筒易积液”的特征,柱塞气举工艺是神木气田主要的排水采气技术,但存在柱塞气举气井分布散、管理难、规模小和效果评价方法单一的问题.为了便于柱塞气举气井管理,提高运行效率和综合评价,提出了柱塞气举示范推广的思路,通过分析神木气田气井生产现状,对比优选排水采气工艺,研究适用的工艺及应用时机、设计柱塞气举参数、选取柱塞气举示范区和优化运行制度.应用结果表明,柱塞气举示范区提高了区域产气量、产水量,降低了产量递减率,对高效开发致密气藏具有重要意义,可在神木气田或类
减扭防磨工具可以将钻杆与套管间的摩擦转化为工具本体与其旋转外套间的摩擦,有效传递施工扭矩、降低套管磨损达到减小施工扭矩和保护套管的目的.文章在对国内外减扭防磨工具结构特点及现场应用情况分析的基础上研制了 一种长寿命、高效的全金属减扭防磨工具,并对减扭防磨工具的抗拉、抗扭强度进行了测试,室内试验结果表明,工具的抗拉强度能达到3 550 kN、抗扭强度达到125 kN·m,满足现场钻井安全要求.减扭防磨工具在大港油田4 口井进行了现场实验,工具累计工作时间达到1 280 h无故障,同一井深减扭防磨工具应用前后
With the rapid development of computer technology,automatic control technology and communication technology,research on unmanned aerial vehicles(UAVs)has attracted extensive attention from all over the world during the last decades.Particularly due to the
针对固井时油基钻井液与水泥浆混合发生接触污染,会造成混浆段流变性变差和抗压强度降低这一问题,文章对接触污染的机理进行了分析和讨论,比较了掺入油基钻井液前后的水泥浆性能,并利用环境扫描电镜、X-射线衍射仪、红外光谱和扫描电镜对比了掺入前后水泥浆的物相、水化过程和微结构.研究结果表明,接触污染的机理在于油包水乳化钻井液中的乳化剂在水泥浆中产生了渗透压现象和破乳作用,渗透压现象可造成水泥浆中的自由水通过半透膜迁移入钻井液中的盐水相中,导致水泥浆流变性能急剧恶化;破乳作用可造成乳化剂在混浆中的游离,游离乳化剂会包
This paper is concerned with the coordinative control problem of networked nonlinear multi-agents(NNM)with communication delays.A high-order fully actuated(HOFA)model is introduced to describe the nonlinear multi-agents.Based on this model,a HOFA predicti
It is crucial to predict the outputs of a thickening system,including the underflow concentration(UC)and mud pressure,for optimal control of the process.The proliferation of industrial sensors and the availability of thickening-system data make this possi
塔里木中部地区奥陶系油藏主要采用水平井开发模式实施长段地质目标穿越,钻井深度普遍在7 000 m左右.目的层奥陶系储层地质条件复杂、缝洞发育、钻井液安全密度窗口超窄,钻井过程中普遍发生恶性漏失,严重制约了该油藏的勘探开发进程.由于大型溶洞和裂缝的存在,传统堵漏材料结合常规堵漏技术治理塔中地区奥陶系恶性漏失成功率较低;为此,文章分析了塔中奥陶系储层漏失特征和堵漏难题,在此基础上提出了“投球架桥变缝洞为孔,多种堵漏材料协同充填封堵”的树脂球堵漏工艺技术.树脂球堵漏技术在X井恶性井漏治理中的成功应用表明,该技术
This article presents a distributed periodic event-triggered(PET)optimal control scheme to achieve generation cost minimization and average bus voltage regulation in DC microgrids.In order to accommodate the generation constraints of the distributed gener
In this paper,we study the system performance of mobile edge computing(MEC)wireless sensor networks(WSNs)using a multiantenna access point(AP)and two sensor clusters based on uplink nonorthogonal multiple access(NOMA).Due to limited computation and energy
The Laplacian eigenvalue spectrum of a complex network contains a great deal of information about the network topology and dynamics,particularly affecting the network synchronization process and performance.This article briefly reviews the recent progress